Trip-hammer ram connection.



No. 665,249. Paiented Ian. I, I901.

L. MAYER.

TRIP HAMMER RAM CONNECTION.

(Application filed Mar, 14, 1900.)

t N o M o d e I UNITE STATES PATENT OFFICE.

LOUIS MAYER,OF MANKATO, MINNESOTA.

TRIP-HAMMER RAM CONNECTION.

SPECIFICATION forming part of Letters Patent No. 665,249, dated January 1, 1901.

Application filed March 14, 1900. Serial No. 8,667. iNo model.)

To all whom it may concern:

Beit known that I, LOUIS MAYER, a citizen of the United States, residing at Mankato, in the county of Blue Earth and State of Minnesota, have invented a new and useful Trip- Hainmer Ram Connection, of which the following is a specification.

This invention relates to power-hammers of the type known as trip-hammers, and has special reference to the coupling connection between the ram or hammer-head and the wrist-pin of the crank.

To this end the invention primarily con templates a novel and practical form of rain connection providing a yielding coupling therefor which will overcome the inertia of the ram at the ends of the stroke, thereby constituting a cushion or yielding connection between the ram and the crank, so as to relieve the same and the mechanism associated therewith from the jar and shock produced by the ram striking the work.

A further object of the invention is to provide a yielding ram connection which will not only cushion or relieve the jar incident to the operation of the machine, but which shall also consist of a minimum number of parts readily assembled and taken apart, while at the same time being so arranged as to obviate the possibility of breaking and getting lost by the constant operation of the machine.

With these and other objects in view, which will more readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated, and claimed.

The fundamental features of the connection or coupling are necessarily susceptible to some modification without departing from the spirit or scope of the invention; but the preferred embodiment of the improvements is shown in the accompanying drawings, in which- Figure 1 is a perspective view showing the improved coupling or ram connection applied to a power tripham1ner of the rotating-crank type. Fig. 2 is an enlarged vertical sectional View of the yielding coupling or connection for the ram. Fig. 3 is a vertical view on the line 3 3 of Fig. 2, showing in dotted lines the position to which one of the T coupling-links is turned while being inserted into engagement with the coupling-box or removed therefrom. Fig. 4 is a detail in perspective of one of the T coupling-links.

Like numerals of reference designate corresponding parts in the several figures of the drawings.

In carrying out the invention there is no change made in the main operating parts of the machine. So for illustrative purposes there is shown in the drawings an ordinary construction of power trip-hammer.

The numeral 1 designates the upright stand of the hammer, having the usual anvil 2, above which is arranged a reciprocating ram or hammer-head 3, working in the guides 4 upon the stand, and at the upper end of the latter is arranged the usual drive-shaft 5, carrying at one end the rotating crank-wheel 6, provided with the crank or wrist pin 7. To this crank or wrist pin is loosely connected one end of a short crank-pitman 8, which transmits motion to the yielding connection for the ram in the manner to be presently explained.

I11 adapting the invention to a power triphammer the reciprocating ram 3 thereof is provided at or contiguous to its upper end and at the front side thereof with a hollow coupling-box 9, preferably of a circular form, and provided in diametrically opposite sides thereof with receiving-slots 10 and in the inner faces of such sides with the transversely-disposed bearing-grooves 11, which are intersected by the vertically-disposed receivingslots 10 and arranged in a plane intermediate the ends of said slots. By reason of intersecting the vertically-disposed slots 10 the transversely disposed bearing grooves 11, upon the inner faces of opposite sides of the coupling-box, are necessarily disposed at both sides of the said slots 10 to provide suitable bearings for the coupling-links 12. A pair of the coupling-links 12 are associated with the hollow coupling-box 9 of the ram and arranged, respectively, at opposite sides of the box, and said coupling-links 12 are of an approximate T shape, consisting of the straight stems 13 and the cross-bars 14 at one end of said stems, the cross-bars 14 of the couplinglinks 12 being provided with rounded inner sides 15, adapted to loosely work in the trai1sversely-disposed bearing-grooves 11 within the coupling-box. The T- shaped couplinglinks 12 are provided at their outer ends with pivot-eyes 16, pivotally mounted within the lower bifurcated ends 16 of the oppositelyarranged carrying-arms 17, apivot-pin or bolt 1b pivotally joining the said carrying-arms 17 with the coupling-links 12. The pair of carrying-arms 17 which are respectively connected to the oppositely-located couplinglinks 12, are preferably of a bowed formation to properly extend around or span the coupling-box of the ram and are pivotally connected at their upper ends, as at 18, to the ears or lugs 19, projecting from opposite sides of a knuckle-block 20, suitably mounted on the short crank-pitman 8, which is carried by the wrist-pin 7 of the crank-Wheel 6.

To complete the connection between the rotating crank and the reciprocating ram, the tension-spring 21 is interposed between and connected with the swinging reciprocatory carrying-arms 17 at a point intermediate the ends of the latter. The tension of said spring 21 normally spreads the carryingarms 17 apart and holds the cross-bars 14 of the T- links in proper registering engagement with the interior bearing-grooves of the couplingbox.

In assembling the parts of the connection the cross-bars of the T- links are inserted edgewise through the vertically-disposed recei ving-slots 10 of the coupling-box and after having been passed into such box are given a quarter-turn, so as to bring the same into position for being drawn into the transversely-disposed bearing-grooves. To remove the cou pling-links,this operation is reversed that is, the same are moved out of the bearing-grooves 11 and given a quarter-turn and then drawn edgewise out through the vertically-disposed slots 10.

The construction described provides a yielding connection or coupling for the ram, which cushions or relieves the working parts of the machine from the jar and shock incident to the ram or hammer-head striking the work, thus obviating the severe strain and wear and the breakage of parts due to a positive coupling of the elements.

From the foregoing it is thought that the construction,operation,and many advantages of the herein-described trip-hammer ram connection will be readily apparent to those familiar with the art without further description, and it will be understood that various changes in the form, proportion, and minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-

1. In a ram connection for trip-hammers, the combination with the reciprocating ram, of the operating connections therefor having a pair of swinging links provided with members having a loose interlocking pivotal connection with the ram, said members being engaged and disengaged by an axial movement thereof, and means for yieldingly holding the links in their operative interlocked positions, substantially as set forth.

2. In a trip-hammer, the combination with the reciprocating ram having a single hollow coupling-box, of the operating connections for the ram having swinging coupling-links loosely interlocked with and inside of the said coupling-box, said links being engaged with and disengaged from said box by an axial movement thereof, and means for yieldingly holding thelinks in their operative positions, substantially as set forth.

3. In a trip-hammer, the combination with the reciprocating ram having a hollow coupling-box provided with interior bearings, of the operating connections for the ram comprising a pair of vertically--reciprocating, spring-separated carrying-arms, and coupling-links pivotally connected with said carrying-arms and provided with members detachably engaging the inside of the box and journaled in the bearings thereof, said links being operatively engaged with the box and disengaged therefrom by a quarter-turn or axial movement of the same, substantially as set forth.

4. In a trip-hammer, the combination with the ram having a hollow coupling-box provided in diametrically opposite sides with vertically-disposed slots, and upon the inner faces of said sides with the transversely-disposed bearing-grooves, of the operating connections for the ram having a pair of oppositely-located swinging T- shaped couplinglinks adapted to extend through said slots, and whose cross-bars are adapted to loosely interlock with said bearing-grooves, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two Witnesses.

LOUIS MAYER.

Witnesses:

LORENZ L. MAYER, P. H. JORDAN. 

